Will Horne is a postdoctoral research fellow at Georgia State University. His work focuses on political parties, elections, and representation, with a particular emphasis on the causes of political polarization. He holds a PhD from Princeton University (2022). With co-authors, he is the author of American Affective Polarization in Comparative Perspective (Cambridge University Press, 2020) and has published articles in outlets including the American Political Science Review, British Journal of Political Science, and Comparative Political Studies.